TSL transiton mod help

Hi every one i am tring to make a mod that I could not find any where

I am trying to make A DS to LS transition Appearance mod for HK-47 T3M4 and Hanharr

After i finished the textures and started poking around the permanence.2da file and the other 2Da files i found out that the Heads.2da file dose not include the heads for the 3 party NPC so i got stuck cos all the tutorials i have found include the editing of the Heads.2da

So if can someone here help would be nice